fix(deps): update dependency @adobe/mdast-util-gridtables to v4.0.8

Author: renovate[bot]

package-lock.json

@@ -45,7 +45,7 @@
   "dependencies": {
     "@adobe/helix-markdown-support": "7.1.6",
     "@adobe/helix-shared-utils": "3.0.2",
-    "@adobe/mdast-util-gridtables": "4.0.7",
+    "@adobe/mdast-util-gridtables": "4.0.8",
     "@adobe/remark-gridtables": "3.0.7",
     "cookie": "1.0.1",
     "github-slugger": "2.0.0",